Suzuki SWIFT RS415 2017, Service Manual

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1A-24 Engine General Information and Diagnosis:
Fail-Safe Table
S4RS0A1104006
When any of the following DTCs is detected, ECM enters fail-safe mode as long as malfunction continues to exist but
that mode is canceled when ECM detects normal condition after that.
Scan Tool Data
S4RS0A1104007
As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles
by using a scan tool, use them as reference values. Even when the vehicle is in good condition, there may be cases
where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not
be made by checking with these data alone.
Also, conditions that can be checked by the scan tool are those detected by ECM and output from ECM as commands
and there may be cases where the engine or actuator is not operating (in the condition) as indicated by the scan tool.
Be sure to use the timing light to check the ignition timing.
NOTE:
• With the generic scan tool, only star (*) marked data in the following table can be read.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the
neutral gear position and A/T gear to the “Park” position and pull the parking brake fully. Also, if
nothing or “no load” is indicated, turn OFF A/C, all electric loads, P/S and all the other necessary
switches.
DTC No. Detected item Fail-safe operation
) P0102 Mass air flow circuit low input • ECM controls injector drive time (fuel injection
volume) according to throttle valve opening
(closed throttle position or not).
• ECM stops EGR control.
) P0103 Mass air flow circuit high input
) P0112 Intake air temperature sensor circuit low ECM controls actuators assuming that intake air
temperature is 20
q
C (68
q
F). ) P0113 Intake air temperature sensor circuit high
) P0117 Engine coolant temperature circuit low • ECM controls actuators assuming that engine
coolant temperature is 80
q
C (176
q
F).
• ECM operates radiator cooling fan.
) P0118 Engine coolant temperature circuit high
)
P0122 Throttle position sensor circuit low input ECM controls actuators assuming that throttle
opening is about 20
q
.
)
P0123 Throttle position sensor circuit high input
)
P0335 Crankshaft position sensor circuit
• Ignition timing is fixed.
• ECM changes injection control system from
sequential injection to simultaneous one.
) P0340 Camshaft position sensor circuit
ECM changes injection control system from
sequential injection to simultaneous one.
) P0500 Vehicle speed sensor
• ECM controls actuators assuming that vehicle
speed is 0 km/h (0 mile/h).
• ECM stops IAC feedback control.
) P2227 Barometric pressure sensor performance problem
ECM controls actuators assuming that barometric
pressure is 101.33 kPa (762 mmHg).
Scan tool data Vehicle condition
Normal condition /
reference values
*
)
COOLANT TEMP (ENGINE
COOLANT TEMP.) At specified idle speed after warming up 80 – 100
q
C, 176 – 212
q
F
*
)
INTAKE AIR TEMP.
At specified idle speed after warming up
–5
q
C (23
q
F) + environmental
temp. to 40
q
C (104
q
F) +
environmental temp.
*
)
ENGINE SPEED
It idling with no load after warming up Desired idle speed
r
50 r/min.
)
INJ PULSE WIDTH (FUEL
INJECTION PULSE WIDTH)
At specified idle speed with no load after warming
up
2.0 – 4.0 msec.
At 2500 r/min. with no load after warming up 2.0 – 3.6 msec.